DR. MICHAEL JOHN STEPHEN (M.D.) – Cardiovascular Disease Physician, NPI 1275807638
Cardiovascular Disease Physician
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Doctor Profile
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Profile Insights
NPPES metrics only — not quality of care.
2,430 CARDIOVASCULAR DISEASE (CARDIOLOGY) in TX
Provider Addresses for DR. MICHAEL JOHN STEPHEN (M.D.)
6400 FANNIN ST
SUITE 3000
HOUSTON, TX 770301527
Phone: (713) 790-0841
Type: Mailing
5115 FANNIN ST STE 801
HOUSTON, TX 770045870
Phone: (713) 790-0841
Fax: (713) 790-9663
Type: Mailing
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 110 Open Payments records for all available years, with a total value of $2,364.
Total Amount is formed as General ($2,364) + Research ($0) + Ownership ($0) = $2,364.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: PFIZER INC. ($445).
Total Amount
$2,364
General + Research + Ownership
Payments
110
Total payment records
General Amount
$2,364
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| PFIZER INC. | $445 |
| Abbott Laboratories | $419 |
| Novartis Pharmaceuticals Corporation | $172 |
| E.R. Squibb & Sons, L.L.C. | $166 |
| Medtronic, Inc. | $125 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2012-08-10
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20120810000164 | I | Cardiovascular Disease (Cardiology) | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| J2785 | Injection, regadenoson, 0.1 mg | 1,816 | 452 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 1,395 | 706 | $0 |
| 93306 | Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | 515 | 499 | $0 |
| 93015 | Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | 494 | 490 | $0 |
| A9555 | Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries | 401 | 389 | $0 |
Insurance plans in this area (ZIP 77030)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | TX | 78452 | Nuclear medicine study of vessels of heart using drugs or exercise multiple studies | 53 | 53 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | TX | 93010 | Routine electrocardiogram (EKG) using at least 12 leads with interpretation and report | 181 | 136 |
| CARDIOVASCULAR DISEASE (CARDIOLOGY) | TX | 93458 | Insertion of catheter in left heart for imaging of blood vessels or grafts and left lower heart | 33 | 33 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Cardiovascular Disease (Cardiology) | TX | |
| - | TX | |
| - | TX | |
| Cardiac Electrophysiology | TX | |
| Interventional Cardiology | WI | |
| Cardiovascular Disease (Cardiology), Interventional Cardiology | TX | |
| Cardiovascular Disease (Cardiology), Cardiac Electrophysiology | TX | |
| Cardiovascular Disease (Cardiology) | TX | |
| Internal Medicine, Cardiovascular Disease (Cardiology) | TX | |
| Cardiovascular Disease (Cardiology) | TX |
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